I was SUPER paranoid about showing any kind of skin when BF, but have big boobs as well. I searched high and low for the right singlet and couldn't find one. I bought 5 singlets from best and less, whilst wearing them cut a hole for each boob the right size to feed/clip/unclip my bra and then sewed around the edges to stop them fraying. Worked a treat and only for the cost of the singlets. My Mom did think I was nuts though!